Trimethylsilyl-sugar profiles ofStreptococcus milleriandStreptococcus mitis

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Abstract
Seventy strains of viridans-group streptococci were analyzed gas chromatographically after preparation of trimethylsilyl ethers of their cellular sugars. The resulting profiles were evaluated as a possible aid to taxonomy. Glycerol, glucose, galactose, N-acetyl-glucosamine and N-acetylmuramic acid were found in all strains, in varying amounts. Rhamnose was the major neutral sugar in most strains other than representatives of S. mitis, which invariably had ribose and usually anhydroribitol but no rhamnose. One strain of S. mitis possessed arabitol. Some strains of S. mitis and S. milleri were alone in containing N-acetylgalactosamine. A combination of N-acetylgalactosamine and rhamnose in the absence of ribose was diagnostic for strains of S. milleri.

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